We already know Carrie Underwood is expecting, so that's not the big news. Carrie joined Hoda this morning on The Today Show to do two things, one of them was making a pretty big announcement.

Carrie will be playing down in Central Park this Saturday for the Global Citizens Festival to raise awareness for global poverty. Not only did she talk to Hoda about the big event Saturday, but she also reveled she will be releasing a new song Monday, that will be featured on her Greatest Hits Album. The album comes out December 9th, but you can listen to her new song "Something In The Water" starting Monday.

Watch her full interview with Hoda and The Today Show here:

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